Question: The stress-strain data from a tensile test on a cast-iron specimen are Plot the stress-strain locus and find the 0.1 percent offset yield strength, and

The stress-strain data from a tensile test on a cast-iron specimen are

Engineering stress, kpsi 5 10 16 9 26 32 046 49 54 Engineering strain, 0.20 044 0.80 0 .5 2.0 2.8 3.4 40 5.0 0-n/in

Plot the stress-strain locus and find the 0.1 percent offset yield strength, and the tangent modulus of elasticity at zero stress and at 20 kpsi.

Engineering stress, kpsi 5 10 16 9 26 32 046 49 54 Engineering strain, 0.20 044 0.80 0 .5 2.0 2.8 3.4 40 5.0 0-n/in

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